import fs from 'fs';
import lodash from 'lodash';
import path from 'path';
import { pluginPath } from './path.js';

const _logPath = path.join(pluginPath, 'CHANGELOG.md');

let logs = {};
let changelogs = [];
let currentVersion;
let versionCount = 4;

let packageJson = JSON.parse(fs.readFileSync('package.json', 'utf8'));

const getLine = function (line) {
  line = line.replace(/(^\s*\*|\r)/g, '');
  line = line.replace(/\s*`([^`]+`)/g, '<span class="cmd">$1');
  line = line.replace(/`\s*/g, '</span>');
  line = line.replace(/\s*\*\*([^\*]+\*\*)/g, '<span class="strong">$1');
  line = line.replace(/\*\*\s*/g, '</span>');
  line = line.replace(/ⁿᵉʷ/g, '<span class="new"></span>');
  return line;
};

try {
  if (fs.existsSync(_logPath)) {
    logs = fs.readFileSync(_logPath, 'utf8') || '';
    logs = logs.split('\n');

    let temp = {};
    let lastLine = {};
    lodash.forEach(logs, line => {
      if (versionCount <= -1) {
        return false;
      }
      let versionRet = /^#\s*([0-9a-zA-Z\\.~\s]+?)\s*$/.exec(line);
      if (versionRet && versionRet[1]) {
        let v = versionRet[1].trim();
        if (!currentVersion) {
          currentVersion = v;
        } else {
          changelogs.push(temp);
          if (/0\s*$/.test(v) && versionCount > 0) {
            versionCount = 0;
          } else {
            versionCount--;
          }
        }

        temp = {
          version: v,
          logs: [],
        };
      } else {
        if (!line.trim()) {
          return;
        }
        if (/^\*/.test(line)) {
          lastLine = {
            title: getLine(line),
            logs: [],
          };
          temp.logs.push(lastLine);
        } else if (/^\s{2,}\*/.test(line)) {
          lastLine.logs.push(getLine(line));
        }
      }
    });
  }
} catch (e) {
  // void error
}

const yunzaiVersion = packageJson.version;
const isV3 = yunzaiVersion[0] === '3';
let isMiao = false;
let name = 'Yunzai-Bot';
if (packageJson.name === 'miao-yunzai') {
  isMiao = true;
  name = 'Miao-Yunzai';
} else if (packageJson.name === 'trss-yunzai') {
  isMiao = true;
  name = 'TRSS-Yunzai';
}

const version = {
  isV3,
  isMiao,
  name,
  get version() {
    return currentVersion;
  },
  get yunzai() {
    return yunzaiVersion;
  },
  get changelogs() {
    return changelogs;
  },
};

export default version;
